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1987～1991年,测定了采自贵州省毕节、大方、威宁、水城、兴义、贵阳、遵义,金沙、黔西、织金、纳雍、赫章等市县的玉米大斑病菌标样,按照国际上划分生理小种的毒力公式评定所测定的125个菌株,结果表明,黔西北特殊玉米生态区和遵义、兴义、水城等广大地区的玉米大斑病菌存在着1号、2号和3号3个生理小种.1号小种有97个菌株,占测定菌株数的80.17%;2号小种有11个菌株,占9.09%;3号小种有13个菌株,占10.74%.1号小种各地均有分布,2号小种和3号小种分布也较广.
From 1987 to 1991, the standard samples of S. turcica were collected from counties and counties of Bijie, Dafang, Weining, Watertown, Xingyi, Guiyang, Zunyi, Jinsha, Qianxi, Zhijin, Nayong and Hezhang in Guizhou Province , 125 strains were tested according to the international virulence formula of physiological races. The results showed that there were 1, 2 special maize ecotypes in northwestern Guizhou and 2 isolates of S. turcica in Zunyi, Xingyi, Shuicheng and other areas And 3 physiological races of No. 3. There were 97 strains of races on race 1, accounting for 80.17% of the total number of races on race 1, 11 strains of races on race 2, accounting for 9.09%, and 13 races on raiser 3 10.74% .All the races of No. 1 were distributed all over the country, and the races of No.2 and No.3 were also widely distributed.